Samus Aran, a a Cybertronian, and her adoptive Metroid kid are from Nintendo's Metroid and this screenshot's taken from Valve's Garry's Mod.

After Samus swallowed many energon from all the hard work she's done, this robot lady ended up getting her belly so big and stuffed that she may not be able to transform for a while. The metroid then came to give it's mama's stomach some kisses, not that she mind, anyway, but, glad she's raising a wonderful child of hers.